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DarkBASIC Discussion / Help with read/write files

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Satchmo
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Posted: 10th Oct 2007 04:43 Edited at: 10th Oct 2007 04:43
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Well I'm back from my cave, with another question.

Ive been working hard on my pacman(don't laugh), and have started with many level related things, I have decided a good exercise for me would be for my game to read level files, instead of having them built in. I haven't decided on making a level editor or not, but I'm sure of how I want this file to be set up. I need to be able to store a few different things(Ghosts, walls position and size, player start, dots etc) and they need to be neatly set up like so

command position,size

like,



I know how to write and read files(somewhat) but in a very limited manner, I need to know how to not just detect for a whole word on one line, but a specific part of a line, say a comma , or set of numbers, then another and know what each is for. But that's not all, if you know anything good about handling files please share, I need info!

Thanks in advanced!

Your about to get pwned.
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TDK
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Posted: 10th Oct 2007 05:17 Edited at: 10th Oct 2007 05:18
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Quote: "I need to know how to not just detect for a whole word on one line, but a specific part of a line, say a comma , or set of numbers, then another and know what each is for"


If you are new to writing data files, don't write multiple items on a line. Instead, write each value on its own line.

As long as your read routines are exactly the same as your write routines (the writing loops are in the same order as the reading loops) you should read the info back in correctly.

If the number of items in a given category can vary, simply write out the value to the file. The reading routine would read in the value and use it in a For..Next loop to read in that many items.

Finally, to start with, use Write String for everything. You can then use Windows Notepad to open the file up and check to see if it contains what it should do.

TDK_Man

* TDK's Game Programming Forums - Open To All - DB & Team Request Boards *

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Satchmo
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Posted: 10th Oct 2007 05:24
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alright, but how do you write multiple things on 1 line?

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Libervurto
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Posted: 10th Oct 2007 16:20
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@fxgamer
well the way memblocks store this kind of data is to have pointers that tell you how long a string of data is, you could do the same kind of thing. I can't remember the commands but here's a pseudo example:

The "5" is telling you how long the first string is. So then you would read the first five characters and get "abcde".
You could make a better version that tells you where the string starts and how long it is.

In programming, nothing exists
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demons breath
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Posted: 10th Oct 2007 18:32
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does read byte just read one character?

http://jamesmason01.googlepages.com/index.htm
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TDK
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Posted: 10th Oct 2007 22:30
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Quote: "alright, but how do you write multiple things on 1 line?"


That's the really easy part. But, it just makes reading it back in more difficult as you have to parse it yourself.

So why would you want to?

TDK_Man

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Satchmo
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Posted: 15th Oct 2007 05:54
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I guess your right, I'm going to experiment some more and see what I get.

Your about to get pwned.
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Sinani201
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Posted: 21st Oct 2007 04:35
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Are you trying to create, read, or write to files?
Here's an example of writing tile A to a .map:



how do you make a sig?
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